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Illustrate in detail about the Cell
The present day study of cells combines many scientific disciplines, like biochemistry, biophysics, genetics, microscopy and physiology. A great deal has been understood about cells, especially in the last 35 years, regarding how they are constructed, how they function, and how they work together in complex organisms. Still, much remains to be learned. The term 'cell' was first used by Robert Hooke in 1664 to denote the little box-like structures, which he observed in cork tissue under a primitive microscope. A contemporary of Hooke, Antonie van Leeuwenhoek, discovered sperm cells, red blood cells and a variety of microorganisms, again using a microscope consisting of a single lens. However, these initial observations led to nearly two centuries of microscopic study of cells, and, with the gradual introduction of more and more powerful microscopes, the cell nucleus was also discovered. Thus, the cellular nature of all plants and animals came to be recognised. By 1830's, it was proposed that all organisms are constructed of-cells. This statement is now known as the cell doctrine or cell theory.
what are the phase of alpha taxonomy?
In biological studies which of the below terms is used to refer to muscles with less than normal tone? Is it: a) Latent b) Atonic c) Flaccid d) None of these ANSWE
Bone Modeling It is a surface-specific activity (apposition or resorption) that produces a net change in the size and/or shape of a bone after initial bone formation in the emb
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What are some examples of organs and tissues where mitosis is more frequent, less frequent or practically absent? Generally in vertebrates mitosis is more frequent in a tissue
Maximum and minimum range of an animal with the factors of Ph Salinity Pressure Relative human
Q. Show the Peptide found in the brain? There are as many as 300 peptide neurotransmitters found in the brain. Peptide is a short protein consisting of fewer than 100 amino aci
Growth-form and Structure In a community the number of species and size of their populations vary greatly. A community may have one or several species. The environmental factor
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Which terrestrial vertebrate group is extremely rare in deserts? Amphibians are terrestrial vertebrates extremely rare in desert environments (although there are a some species
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